Type-writer action.



J. ALEXANDER. TYPE WRITER ACTION. APPLICATION FILED MAESO, 1912.

" Patented out. 15,1912.

2 SHEETS-SHEBT 1.

mmqroa 'i. ALEXANDER. .,TYPE WRITER ACTION. APPLIGAIION FILED MAR. 30, 1912.

WITNESSES Patented Oct. 15, 1912.

2 SHEETSSHBET 2..

* mmv ron I Jesse Alex nder,

; UNITED srn'rns ATEN oniuon.

v JESSE ALEXANDER, YORK, Y., 'ASSIGNOROF ONE-HALF TO STEPHEN C.

v H. ALS-TEAD, OF BROOKLYN, NEW YORK.

-'citizen of the United ing a powerful printing stroke and 'rvrn-wnrrnanorron.

To all whom it may concern: Be it known that'I, Jnssn ALEXANDER, a States, and resident of New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Type-WVriter Actions, of which the following is a specification. y r

My invention relates to improvements particularly in front stroke or visible writing machines.-

The main object is to provide a light and yielding touch which is capable ofv evelopwhich is susceptible of operation at a highs eed'.

The invention in its preferred f drm is illustrated in the accompanyingtwo sheets of drawing It should be understood, however, that modifications can be made within the scope of my invention in details of construction. and arrangement of the parts. It

. is my intention to limit the scope of my art and the terms claims only so far as required by the prior of the description and of the claims are therefore to be considered as terms of description and not/terms of limitation.. l a

The rear of the key lever is :under pressure of a compression spring, The inter-' mediate lever is connected to the key lever and to the type bar by helical springs. Theintermediate lever also has a sliding engage-- ment with the type bar at the beginning of the stroke. 7

Figure 1 is a vertical longitudinal view of the machine showing the key andjtype bar action-in its normal position of rest. Fig.

2, illustrates the starting. of the type bar toward the printing position. Fig. 3, shows the type bar in the. printing position.

The key lever 1 is pivoted at 2 and has its I rear end under compression of the spring 3. The amount of compression can be adjusted" by a screw 4. The type bar, 5- is pivoted at 6' to the plate 7. The intermediate 1ever 8 is pivoted at- 9' and connected by a helical spring 10 to a downward and rearward ex-.

tension of the type bar and is connected by .-,a helical spring vll to the key lever.

itype bar has an inclined shoulder 12 in front 5 0f and below the pivot 6 adapted to be engaged by thev upper end 13 of the intermediate lever at .the beginning of the printing stroke as shown in type bar is thrownyieldin The Fig. 2. As the type Patented Oct. 15, 1912.

stroke the spring toplay and the gly to the printing point. In a similar way' the .yiel ing connection 11 afi'ords a? yielding touch to bar starts on its printing connection 10 is brought.

the key lever. As the tension of the springs 10 and 11 increases as the key lever is de pressed, greater resistance is afforded gradually to the touch and owing to the momentum of the parts the movement is continued even 'after the key lever is released. Thus an easy touch is aiforded and yet the action iscapable of exerting suflicient force even for manifolding; When the key lever is released the tension. of the springs 10 and 11 tends to pull the parts back to their normal position so that the recovery is rapid.

What I.claim is:

'1. In a key and type bar mechanism, a pivoted type bar having ashoulder, a lever having one .end adapted to engage .said shoulder for starting'said type bar'and a spring'connecting said lever and said type 2. In a key and type 'bar mechanism, a vertical type bar plate,

and below its pivot, a lever" adapted to engage said shoulder and a spring connecting said lever and said extension.

[3. In a key and type bar mechanism, a vertical type bar plate,a type bar pivoted therein and. having an extension in rear a type bar pivotedthereinand having an extension in rear and. below its pivot and a shoulder in front of and. below its pivot and a shoulder in front of and below its pivot, a lever adapted to engage said shoulder, a spring connecting said lever and said extension, a key lever and a spring connecting said key lever and said first mentioned lever.

4. In a key and type bar mechanism, a type bar, a pivoted intermediate lever, a spring connecting said intermediate lever and said type bar, a pivoted key lever, a 7

spring connecting said keylever and said.

interm'ediatelever and a com engaging said key lever.

. 5. In a key and type bar mechanism, a

pression spring rearward extension, an operating lever and 6. In a key and type bar mechanisrma pivoted type bar having an inclined shoulpivoted type barhaving a downwardand v der, m operatingv lever adapted to engaga pperatixlg lever al ljdzsaidftyp-biip;

a pr n ecb ectin l vagtigah a m oigsggidsaid shoulder an 7. x 5W Y99 hai Lme h nimf v ivpted 'kgy leveryal p1votedftype iban haw? mg'anfaflfmflextending downwardly and re'arwardlyj of pivot, 21 pivote'd, intermediate lever having a horizontal arm and a vertical arm, a helical spring connecting the horiwitness GE W; rum-L ST PHEN C. HALSTEAD.

Copies of this patenl: may in obtained for five cents each. by addressing the Oommisioner oflatntjs Washingtpn, D. 0. 

